arm64: dts: mediatek: mt8186: Add GCE node

Add the Global Command Engine (GCE) node for MT8186 SoC
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230324021258.15863-6-allen-kh.cheng@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8186.dtsi

@@ -5,6 +5,7 @@
  */
 /dts-v1/;
 #include <dt-bindings/clock/mt8186-clk.h>
+#include <dt-bindings/gce/mt8186-gce.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/memory/mt8186-memory-port.h>
@@ -626,6 +627,15 @@ systimer: timer@10017000 {
 			clocks = <&clk13m>;
 		};
 
+		gce: mailbox@1022c000 {
+			compatible = "mediatek,mt8186-gce";
+			reg = <0 0X1022c000 0 0x4000>;
+			clocks = <&infracfg_ao CLK_INFRA_AO_GCE>;
+			clock-names = "gce";
+			interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH 0>;
+			#mbox-cells = <2>;
+		};
+
 		scp: scp@10500000 {
 			compatible = "mediatek,mt8186-scp";
 			reg = <0 0x10500000 0 0x40000>,